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A controlled deorbit requires the use of several core systems, including those for communications, power, and avionics. Some of the ISS machinery was not specifically certified to perform in a depressurized environment. (NASA believes that critical systems would remain operable, based on technical analyses, and emphasizes that many of these systems are already used in vacuum.) Another thing to worry about: the ISS losing control over its orientation in space. The spacecraft could start tumbling, flipping the station’s solar arrays away from the sun, taking the primary source of power with it.
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NASA wrote a statement saying that the astronaut experienced an unknown medical event on January 7 "that required immediate attention" from his fellow crew members. Fincke added that his "status quickly stabilized" thanks to the "quick response and the guidance" of the flight surgeons.
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The Milano Cortina Winter Games ended on Sunday night as the Olympics always do: in light, spectacle and speeches about unity. In Verona, the Olympic flag passed to the French Alps and the twin flames were extinguished. But unofficially, at least, a flame also flickered 6,000 miles west.，更多细节参见下载安装 谷歌浏览器 开启极速安全的 上网之旅。
NYT Strands word list for February 28Heels